It's very strange to reinvent a party that isn't broken, especially since the party was essentially overhauled in 2016. I think this conversation is 3-4 years too late, as the GOP already shook up it's hard line against gay marriage, unwavering support for free trade, and it's wishy-washy policy on immigration.
Their first election post “reinvention” they lost 40 seats with a good economy, no pressing emergencies , and a gerrymandered to hell house. They should have never lost as many seats as they did. I mean there’s certainly something to be said about Ryan being a dumbass and putting up the repeal bill so many times when it wasn’t going to pass the senate and making the tax bill disproportionately hurt blue states but the real problem is Trump. He’s actively pushing places that were long term trending D like AZ, GA, and TX out of reach faster. Without those states there’s just not a path for the GOP to win the presidency in the near term